As a skin care professional in the spa, something my clients get used to hearing from me is to ” periodically change your skin care program”.    You change your workout program to make it more effective and I believe the same applies to your skin care program.  How often, or how much you change, depends on your program.   For example, if you are on a specific program to reduce sun damage, then you should follow that until the desired results are achieved.  But if you are on a basic skin care or maintenance program, then changing something in that program even once every 6-8 months can make all of the products more effective.  A simple switch to a different cleanser, mask, or moisturizer can do the trick.  It is not uncommon to switch to a lighter mask or moisturizer for warmer months anyway.  For my ant-aging clients, they might switch between a peptide or vitamin based product to jump start their program and results.  It is important to follow manufacturer directions for use to achieve maximum results. 

Be careful not to become a “product jumper”.  These jump from product to product never giving any one product the proper time to show results.   Not only is this a waste of money but can cause irritation.  If the skin becomes irritated enough, a negative reaction could be caused by any product used.